已知:3I2+6OH﹣═IO3﹣+5I﹣+3H2O
回答下列问题:
—Oh, he is ______ manager who's pleasant to work with. I mean, it is ______ pleasure to work with him.
食物
蕃茄
橘子
鸡蛋清
牛奶
玉米
pH
4
3
8
6
综合考虑原材料和工业基础,珠江三角洲最适宜发展( )